PHP program to check if a year is leap year or not

<?php
function year_check($my_year)
{
   if ($my_year % 400 == 0)
      print("It is a leap year");
   if ($my_year % 4 == 0)
      print("It is a leap year");
   else if ($my_year % 100 == 0)
      print("It is not a leap year");
   else
      print("It is not a leap year");
}
$my_year = 2024;
year_check($my_year);
?>